Year	Measure
1764	672
1765	671.8
1766	671.6
1767	671.5
1768	671.3
1769	671.1
1770	670.9
1771	670.8
1772	670.6
1773	670.4
1774	670.2
1775	670.1
1776	669.9
1777	669.7
1778	669.5
1779	669.4
1780	669.2
1781	669
1782	668.8
1783	668.7
1784	668.5
1785	668.3
1786	668.2
1787	668
1788	667.8
1789	667.6
1790	667.5
1791	667.3
1792	667.1
1793	666.9
1794	666.8
1795	666.6
1796	666.4
1797	666.2
1798	666.1
1799	665.9
1800	665.7
1801	665.6
1802	665.4
1803	665.2
1804	665
1805	664.9
1806	664.7
1807	664.5
1808	664.3
1809	664.2
1810	664
1811	663.8
1812	663.6
1813	663.5
1814	663.3
1815	663.1
1816	663
1817	662.8
1818	662.6
1819	662.4
1820	662.3
1821	662.3
1822	662.3
1823	662.3
1824	662.3
1825	662.2
1826	662.2
1827	662.2
1828	662.2
1829	662.2
1830	662.2
1831	662.2
1832	662.2
1833	662.2
1834	662.2
1835	662.2
1836	662.2
1837	662.2
1838	662.2
1839	662.2
1840	662.2
1841	662.2
1842	662.2
1843	662.2
1844	662.2
1845	662.2
1846	662.2
1847	662.2
1848	662.2
1849	662.2
1850	662.1
1851	662.2
1852	662.2
1853	662.2
1854	662.2
1855	662.2
1856	662.2
1857	662.2
1858	662.2
1859	662.2
1860	662.2
1861	662.2
1862	662.2
1863	662.3
1864	662.3
1865	662.3
1866	662.3
1867	662.3
1868	662.3
1869	662.3
1870	662.3
1871	663.8
1872	665.4
1873	666.9
1874	668.4
1875	669.9
1876	671.5
1877	673
1878	674.6
1879	676.1
1880	677.7
1881	679.2
1882	680.8
1883	682.4
1884	683.9
1885	704.1
1886	680.5
1887	710.2
1888	715.4
1889	694.7
1890	725.7
1891	657.8
1892	709.4
1893	726.1
1894	735.9
1895	716.6
1896	662.6
1897	782.3
1898	782.6
1899	720.4
1900	744.4
1901	755.1
1902	813.1
1903	819.7
1904	818.5
1905	798.8
1906	816.6
1907	762.5
1908	768.8
1909	869.2
1910	865.4
1911	858.1
1912	855.6
1913	835.5
1914	880.2
1915	858.1
1916	882.2
1917	865.5
1918	754.1
1919	857.5
1920	788.8
1921	844
1922	870.9
1923	833.9
1924	866
1925	867.5
1926	885.6
1927	877
1928	877
1929	904.1
1930	901.4
1931	883.4
1932	880.9
1933	869.4
1934	865.4
1935	845.3
1936	865.9
1937	839.9
1938	830.3
1939	836.9
1940	852.6
1941	858
1942	844.1
1943	867.3
1944	848.3
1945	824.9
1946	772.4
1947	767.2
1948	766.4
1949	775.6
1950	739.1
1951	698.4
1952	684.6
1953	732.5
1954	731.6
1955	730.5
1956	733.8
1957	747.1
1958	738.7
1959	727.9
1960	744.2
1961	769
1962	803.3
1963	831.4
1964	870.8
1965	885.8
1966	932.9
1967	942.4
1968	981.8
1969	1018
1970	1094
1971	1070
1972	1050
1973	1096
1974	1106
1975	1124
1976	1156
1977	1176
1978	1241
1979	1250
1980	1334
1981	1388
1982	1443
1983	1497
1984	1519
1985	1609
1986	1661
1987	1705
1988	1761
1989	1794
1990	1826
1991	1875
1992	1972
1993	1967
1994	1991
1995	2038
1996	2081
1997	2049
1998	2050
1999	2073
2000	2086
2001	2069
2002	2093
2003	2153
2004	2270
2005	2396
2006	2489
2007	2612
2008	2661
2009	2591
2010	2615
2011	2639
2012	2681
2013	2719
2014	2753
2015	2783
2016	2811
2017	2840
2018	2870